Hi guys I sorted out my problem
and this solution could be very helpful for people who has just started to use dbf etc (as myself)
1. From Data access we put component DBF on Form1
2. In Object inspector click Dbf1:TDbf and then see Properties
Table Name - write down - base.dbf
Table Level - write down - 7
StoreDefs - choose - True
OpenMode - omAutoCreate
FilePath - choose - Desktop
FieldDefs - click it - Editing Dbf1.FieldsDefs windows appears - click Add
in Object Inspector
select 0-Dbf1Field1:TfieldDef and in its properties
DataType - choose - ftString
Name - Field1
Size - 30
Then in Editing Dbf1.FieldsDefs windows - click Add again
select 1-Dbf1Field2:TfieldDef and in its properties
DataType - choose - ftMemo
Name - Field2
Size - 10
Close Editing Dbf1.FieldsDefs windows
in object Inspector select Indexes: TDbfIndexDefs and click right button of the mouse there will menu click Add Item
In Object Inspector select 0-TDbfIndexDef:TDbfIndexDef
In its properties
IndexFile - write down - indexs.ndx
in Options
ixCaseInsesentive - choose - True
ixPrimary - choose - True
SortField - Field1
then in Object Inspector select Dbf1: TDbf and in its properties
Active - choose -True
on your desktop you will have three database files
Indexs.ndx - index file
base.dbf - database
base.dbt - DBT is a file extension for a text memo file format used by dBase
Now you can use your database files in your application
All the best